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Fair Value Measurements - Measurement of OREO (Details) - Fair Value, Measurements, Nonrecurring - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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OREO not covered under loss-share agreements: |  |
Carrying amount prior to remeasurement | $ 5,258 | $ 8,732
Impairment recognized in results of operations | (939) | (1,340)
Fair value | $ 4,319 | $ 7,392

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